1101140221 has 4 divisors (see below), whose sum is σ = 1101610944. Its totient is φ = 1100669500.

The previous prime is 1101140213. The next prime is 1101140233. The reversal of 1101140221 is 1220411011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1220411011 = 17 ⋅71788883.

It is a cyclic number.

It is not a de Polignac number, because 1101140221 - 2³ = 1101140213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101140251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231835 + ... + 236536.

It is an arithmetic number, because the mean of its divisors is an integer number (275402736).

Almost surely, 2^1101140221 is an apocalyptic number.

It is an amenable number.

1101140221 is a deficient number, since it is larger than the sum of its proper divisors (470723).

1101140221 is an equidigital number, since it uses as much as digits as its factorization.

1101140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470722.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1101140221 is about 33183.4329297015. The cubic root of 1101140221 is about 1032.6366672780.

Adding to 1101140221 its reverse (1220411011), we get a palindrome (2321551232).

The spelling of 1101140221 in words is "one billion, one hundred one million, one hundred forty thousand, two hundred twenty-one".